Mannion takes on a powerful city commissioner he suspects is partly to blame for a shrinking budget that has forced the chief to lay off officers, but the mayor is so upset with the move, he looks for an excuse to fire the chief.
A moving tribute to Lynne Thigpen who died shortly before this episode. It mirrors her sudden death in real life. The writers have allowed you to believe she lives on by donating her heart. This episode shows the cast and her colleagues playing the hardest part they have ever played. Ending with moving tributes from all the cast members.
The Chief packs his things and heads off on his motorcycle into the sunset of Arizona. While playing golf, Cujo finds a severed finger when searching for Mannion's golf ball. Mannion bring the finger to the attention of Deputy Arturo Ortez (_Jaime Gomez (I)_) while some M.P.D. officers deal with their reassignments.
The city panics when a serial killer who murdered 11 people in 1985 but was never caught is reportedly responsible a recent slaying similar to his past crimes, especially when a letter is supposedly written by the killer claiming credit.
A lawyer and his wife are killed in their home and the only witness is their autistic daughter. Jack Mannion calls on former F.B.I. hostage negotiator Tommy Morgan, (who is now a horse whisperer), to try and get through to the girl and discover the identity of the killer.